<template>
	<view class="preview" v-if="currentInfo">
		<swiper class="swiper" circular :current="currentIndex" @change="swiperChange">
			<swiper-item v-for="(item,index) in classList" :key="item._id" >
				<image v-if="readImgs.includes(index)"  @click="maskChange" :src="item.picurl" mode="aspectFill"></image>
			</swiper-item>
		</swiper>
		<view class="mask" v-if="maskState">
			<view class="goBack" :style="{ top:getStatusBarHeight()+'px'}" @click="goBack">
				<uni-icons type="back" size="20" color="#fff"></uni-icons>
			</view>
			<view class="count">{{ currentIndex + 1 }} / {{ classList.length }}</view>
			<view class="time"><uni-dateformat :date="Date.now()" format="hh:mm"></uni-dateformat></view>
			<view class="date"><uni-dateformat :date="Date.now()" format="MM月dd日"></uni-dateformat></view>
			<view class="footer">
				<view class="box" @click="clickInfo">
					<uni-icons type="info" size="28"></uni-icons>
					<view class="text">信息</view>
				</view>
				<view class="box" @click="clickScore">
					<uni-icons type="star" size="28"></uni-icons>
					<view class="text">{{ currentInfo.score }}分</view>
				</view>
				<view class="box" @click="clickDownload">
					<uni-icons type="download" size="23"></uni-icons>
					<view class="text">下载</view>
				</view>
			</view>
		</view>
		<uni-popup ref="infoPopup" type="bottom">
			<view class="infoPopup">
				<view class="popHeader">
					<view></view>
					<view class="title">壁纸信息</view>
					<!-- 关闭按钮 -->
					<view class="close"><uni-icons type="closeempty" size="18" color="#999" @click="clickInfoClose"></uni-icons></view>
				</view>
				<scroll-view scroll-y>
					<view class="content">
						<!-- 壁纸ID -->
						<view class="row">
							<view class="label">壁纸ID：</view>
							<text selectable class="value">{{ currentInfo._id }}</text>
						</view>
						<!-- 分类 -->
					<!-- 	<view class="row">
							<view class="label">分类：</view>
							<text selectable class="value class">明星美女</text>
						</view> -->
						<!-- 发布人 -->
						<view class="row">
							<view class="label">发布人：</view>
							<text selectable class="value">{{ currentInfo.nickname }}</text>
						</view>
						<!-- 评分 -->
						<view class="row">
							<view class="label">评分：</view>
							<view class="value" roteBox>
								<uni-rate readonly="true" touchable="true" :value="currentInfo.score" size="16"></uni-rate>
								<text class="score">{{ currentInfo.score }}分</text>
							</view>
						</view>
						<!-- 摘要文字 -->
						<view class="row">
							<view class="label">摘要：</view>
							<view class="value">{{ currentInfo.description }}</view>
						</view>
						<!-- 标签名 -->
						<view class="row">
							<view class="label">标签名：</view>
							<view class="value tabs">
								<view class="tab" v-for="tab in currentInfo.tabs" :key="tab">{{ tab }}</view>
							</view>
						</view>
						<!-- 版权声明 -->
						<view class="copyright">
							声明：本图片来用户投稿，非商业使用，用于免费学习交流，如侵犯了您的权益，您可以拷贝壁纸ID举报至平台，邮箱3062328859@qq.com，管理将删除侵权壁纸，维护您的权益。
						</view>
					</view>
				</scroll-view>
			</view>
		</uni-popup>
		<uni-popup ref="scorePopup" :is-mask-click="false">
			<view class="scorePopup">
				<view class="popHeader">
					<view></view>
					<view class="title">{{ isScore ? '已经评分过了~' : '壁纸评分' }}</view>
					<!-- 关闭按钮 -->
					<view class="close"><uni-icons type="closeempty" size="18" color="#999" @click="clickScoreClose"></uni-icons></view>
				</view>
				<view class="content">
					<uni-rate v-model="userScore" :disabled="isScore" disabled-color="#FFCA3E" allowHalf></uni-rate>
					<text class="text">{{userScore}}分</text>
				</view>
				<view class="footer">
					<button @click="submitScore" :disabled="!userScore || isScore " type="default" size="mini" plain>确认评分</button>
				</view>
			</view>
		</uni-popup>
	</view>
</template>

<script setup>
	import {
		ref
	} from 'vue';
	import {
		getStatusBarHeight
	} from '@/utils/system.js';
	import { onLoad,onUnload,onShareAppMessage,onShareTimeline } from '@dcloudio/uni-app';
	import api from '@/api/api.js';
	//是否显示遮蔽信息的bool
	const maskState = ref(true);
	//信息弹窗实例
	const infoPopup = ref(null);
	//评分弹窗实例
	const scorePopup = ref(null);
	//用户评分
	const userScore = ref(0);
	//列表信息
	const storgClassList = uni.getStorageSync('storgClassList') || [];//防止没有数据
	//展示列表信息
	const classList = ref([]);
	//当前展示图片Id
	const currentId = ref(null);
	//当前展示图片索引
	const currentIndex = ref(0);
	//当前看过的图片数组
	const readImgs = ref([]);//为了解决饿汉加载占用过多资源的问题
	//当前图片的所有信息
	const currentInfo = ref(null);
	//
	const isScore = ref(false);
	//是否显示遮蔽信息
	const maskChange = () => maskState.value = !maskState.value;
	//打开信息弹窗
	const clickInfo = () => infoPopup.value.open();
	//关闭信息弹窗
	const clickInfoClose = () => infoPopup.value.close();
	//打开评分弹窗
	const clickScore = ()=>{
		//如果缓存中已经有用户评的分
		if(currentInfo.value.userScore){
			isScore.value = true; 
			userScore.value = currentInfo.value.userScore
		}
		scorePopup.value.open();

	};
	//关闭评分弹窗
	const clickScoreClose = () =>{
		scorePopup.value.close();
		userScore.value = 0;
		isScore.value = false;
	};
	//确认评分
	const submitScore = ()=>{
		uni.showLoading({
			title:"加载中...",
			
		})
		api.setupScore({
			classid:currentInfo.value.classid,
			wallId:currentInfo.value._id,
			userScore:userScore.value
		}).then(()=>{
			uni.hideLoading(); //隐藏加载框
			uni.showToast({
				title:'评分成功',
				icon:'none'
			});
			classList.value[currentIndex.value].userScore = userScore.value;
			uni.setStorageSync("storgClassList",classList.value);
			clickScoreClose();
		});
		
	};
	//返回上一页
	const goBack = () => uni.navigateBack({
		//如果没有上一页可以返回的话直接返回首页
		fail: () => {
			uni.reLaunch({
				url:'/pages/index/index'
			})
		}
	});
	//切换图片
	const swiperChange = e => {
		currentIndex.value = e.detail.current;
		currentInfo.value = classList.value[currentIndex.value];
		readImgsFun();
	};
	//点击下载
	const clickDownload = async ()=>{
		// #ifdef H5
		uni.showModal({
			content:'请长按壁纸进行保存',
			showCancel:false
		});
		// #endif
		// #ifndef H5
		try{
			//加载框
			uni.showLoading({
				title:'下载中...',
				mask:true
			});
			// //往个人下载列表中写入
			// await api.downloadWall({
			// 	classid:currentInfo.value.classid,
			// 	wallId:currentInfo._id
			// }).catch(error=>{
			// 	if(error.data.errCode == 400 ) throw "下载太频繁";
			// });
			//下载图片
			uni.getImageInfo({
				src:currentInfo.value.picurl,
				success:resp=>{ 
					console.log(currentInfo.value.picurl)
					uni.saveImageToPhotosAlbum({
						filePath:resp.path,
						fail:error=>{
							if(error.errMsg == 'saveImageToPhotosAlbum:fail cancel'){
								uni.showToast({
									title:'保存失败,请重新点击下载',
									icon:'none'
								});
								return ;
							}
							//如果用户未授权提示的失败,提示用户授权
							uni.showModal({
								title:'授权提示',
								content:'需要授权保存相册',
								success:res=>{
									if(res.confirm){
										//打开授权页面
										uni.openSetting({
											success:setting=>{
												if(setting.authSetting['scope.writePhotosAlbum']){
													//提示用户授权成功
													uni.showToast({
														title:'获取授权成功',
														icon:'none'
													});
												}else{
													//提示用户授权失败
													uni.showToast({
														title:'获取授权失败',
														icon:'none'
													});
												 }
											}
										})
									}
								}
							});
						},
						complete: () => uni.hideLoading() //隐藏加载框
					});
				}
			});
		}catch(error){
			console.log(error);
			uni.hideLoading();
		}
		// #endif
	};
	//遍历处理列表
	classList.value = storgClassList.map(item=>{
		return {
			...item, //将对象的每一个属性值展开
			picurl: item.smallPicurl.replace('_small.webp',".jpg") //处理链接
		}
	});
	//根据传入的Id 确定index
	onLoad(async e=>{
		currentId.value = e.id;
		if(e.type == 'share'){
			await api.detailWall({id:currentId.value}).then( resp=>{
				console.log(resp.data.data)
				classList.value = resp.data.data.map(item=>{
					return {
						...item, //将对象的每一个属性值展开
						picurl: item.smallPicurl.replace('_small.webp',".jpg") //处理链接
					}
				})
			});
		}
		currentIndex.value = classList.value.findIndex(item=>item._id == currentId.value );
		currentInfo.value = classList.value[currentIndex.value];
		readImgsFun();
	});
	//页面退出的生命周期钩子
	onUnload(()=>{
		//uni.removeStorageSync('storgClassList'); //清除缓存
	});
	//分享给好友
	onShareAppMessage(e=>{
		return {
			title:"郝子的小壁纸",
			path:'/pages/preview/preview?id='+currentId.value+'&type=share'
		}
	});
	//分享朋友圈
	onShareTimeline(()=>{
		return {
			title:'郝子的壁纸'+pageName,
			imageUrl:'/static/classify2.jpg',
			query:'id='+currentId.value+'&type=share'
		}
	});
	//去重
	function readImgsFun(){
		readImgs.value.push(
		currentIndex.value<=0 ? classList.value.length-1 : currentIndex.value-1,
		currentIndex.value,
		currentIndex.value>=classList.value.length-1 ? 0 : currentIndex.value+1
		);
		readImgs.value = [...new Set(readImgs.value)];
	}
	
</script>
<style lang="scss" scoped>
	.preview {
		width: 100%;
		height: 100vh;
		position: relative;

		.swiper {
			width: 100%;
			height: 100%;

			image {
				width: 100%;
				height: 100%;
			}
		}

		.mask {
			&>view {
				position: absolute;
				left: 0;
				right: 0;
				margin: auto;
				width: fit-content;
				color: #fff;
			}

			.goBack {
				width: 38px;
				height: 38px;
				background-color: rgba(0, 0, 0, 0.5);
				left: 30rpx;
				margin-left: 0;
				border-radius: 100px;
				top:0;
				backdrop-filter: blur(10rpx);
				border: 1rpx solid rgba(255, 255, 255, 0.3);
				display: flex;
				justify-content: center;
				align-items: center;
			}

			.count {
				top: 10vh;
				background: rgba(0, 0, 0, 0.3);
				font-size: 28rpx;
				border-radius: 40rpx;
				padding: 8rpx 28rpx;
				backdrop-filter: blur(10rpx); //模糊
			}

			.time {
				font-size: 140rpx;
				top: calc(10vh + 80rpx);
				font-weight: 100;
				line-height: 1em;
				text-shadow: 0 4rpx rgba(0, 0, 0, 0.3);
			}

			.date {
				font-size: 34rpx;
				top: calc(10vh + 230rpx);
				text-shadow: 0 2rpx rbga(0, 0, 0, 0.3);
			}

			.footer {
				background: rgba(255, 255, 255, 0.8);
				bottom: 10vh;
				width: 65vw;
				height: 120rpx;
				border-radius: 120rpx;
				color: #000;
				display: flex;
				justify-content: space-around;
				align-items: center;
				box-shadow: 0 2rpx 0 rgba(0, 0, 0, 0.1);
				backdrop-filter: blur(20rpx);

				.box {
					display: flex;
					flex-direction: column;
					align-items: center;
					justify-content: center;
					padding: 2rpx 12rpx;

					.text {
						font-size: 26rpx;
						color: $text-font-color-2;
					}
				}
			}
		}
		// 公共弹窗头
		.popHeader {
			display: flex;
			justify-content: space-between;
			align-items: center;
		
			.title {
				color: $text-font-color-2;
				font-size: 26rpx;
		
			}
		
			.close {
				padding: 6rpx;
			}
		
		}
		.infoPopup {
			background: #fff;
			padding: 30rpx;
			border-radius: 30rpx 30rpx 0 0;
			overflow: hidden;
			scroll-view {
				max-height: 60vh;
				.content {
					.row {
						display: flex;
						padding: 16rpx 0;
						font-size: 32rpx;
						line-height: 1.7em;

						.label {
							color: $text-font-color-3;
							width: 140rpx;
							text-align: right;
							font-size: 30rpx;
						}

						.value {
							flex: 1;
							width: 0; //这个地方研究一下
						}

						.roteBox {
							display: flex;
							align-items: center;

							.score {
								font-size: 26rpx;
								color: $text-font-color-2;
								padding-left: 10rpx;

							}
						}

						.tabs {
							display: flex;
							flex-wrap: wrap; //自动换行

							.tab {
								border: 1px solid $brand-theme-color;
								color: $brand-theme-color;
								font-size: 22rpx;
								padding: 10rpx 30rpx;
								border-radius: 40rpx;
								line-height: 1em;
								margin: 0 10rpx 10rpx 0;
							}
						}

						.class {
							color: $brand-theme-color ;
						}
					}
					.copyright {
						font-size: 28rpx;
						padding: 20rpx;
						background: #F6F6F6;
						color: #666;
						border-radius: 10rpx;
						margin: 20rpx 0;
						line-height: 1.6em;
					}
				}
			}
		}
		.scorePopup{
			background-color: #fff;
			padding: 30rpx;
			width:70vw;
			border-radius: 30rpx;
			.content{
				padding: 30rpx 0;
				display: flex;
				align-items: center;
				justify-content: center;
				.text{
					color: #FFCA3E;
					padding: 0 0 0 10rpx;
					width: 80rpx;
					line-height: 1em; //等于字体的大小
					text-align: right;
				}
			}
			.footer{
				display: 10rpx 0;
				display: flex;
				align-items: center;
				justify-content: center;
			}
		}
	}
</style>